How severe is CVE-2026-33468?

CVE-2026-33468 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-33468 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (34th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-33468?

CVE-2026-33468 affects Kysely. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-33468?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-33468 have an EU (EUVD) identifier?

Yes. CVE-2026-33468 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-16265.

When was CVE-2026-33468 published?

CVE-2026-33468 was published on 2026-03-26 and last updated on 2026-06-17.

CVE-2026-33468

CVE-2026-33468 is a high-severity vulnerability in Kysely with a CVSS 3.x base score of 8.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-89.

Key facts

Severity: High (CVSS 3.x base score 8.1)
EPSS exploit prediction: 0% (34th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-16265
Weakness: CWE-89
Affected product: Kysely
Published: 2026-03-26
Last modified: 2026-06-17

Description

Kysely is a type-safe TypeScript SQL query builder. Prior to version 0.28.14, Kysely's `DefaultQueryCompiler.sanitizeStringLiteral()` only escapes single quotes by doubling them (`'` → `''`) but does not escape backslashes. When used with the MySQL dialect (where `NO_BACKSLASH_ESCAPES` is OFF by default), an attacker can use a backslash to escape the trailing quote of a string literal, breaking out of the string context and injecting arbitrary SQL. This affects any code path that uses `ImmediateValueTransformer` to inline values — specifically `CreateIndexBuilder.where()` and `CreateViewBuilder.as()`. Version 0.28.14 contains a fix.

Frequently asked questions

What is CVE-2026-33468?: Kysely is a type-safe TypeScript SQL query builder. Prior to version 0.28.14, Kysely's `DefaultQueryCompiler.sanitizeStringLiteral()` only escapes single quotes by doubling them (`'` → `''`) but does not escape backslashes. When used with the MySQL dialect (where `NO_BACKSLASH_ESCAPES` is OFF by default), an attacker can use a backslash to escape the trailing quote of a string literal, breaking out of the string context and injecting arbitrary SQL. This affects any code path that uses `ImmediateValueTransformer` to inline values — specifically `CreateIndexBuilder.where()` and `CreateViewBuilder.as()`. Version 0.28.14 contains a fix.
How severe is CVE-2026-33468?: CVE-2026-33468 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-33468 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (34th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-33468?: CVE-2026-33468 affects Kysely. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-33468?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-33468 have an EU (EUVD) identifier?: Yes. CVE-2026-33468 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-16265.
When was CVE-2026-33468 published?: CVE-2026-33468 was published on 2026-03-26 and last updated on 2026-06-17.

References

https://github.com/kysely-org/kysely/security/advisories/GHSA-8cpq-38p9-67gx

Affected products (1)

cpe:2.3:a:kysely:kysely:*:*:*:*:*:node.js:*:*

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